EP 2236831 A4 20160323 - SCREW COMPRESSOR
Title (en)
SCREW COMPRESSOR
Title (de)
SCHRAUBENVERDICHTER
Title (fr)
COMPRESSEUR À VIS
Publication
Application
Priority
- JP 2008072808 W 20081216
- JP 2007329094 A 20071220
Abstract (en)
[origin: EP2236831A1] The present invention provides a screw compressor that can reduce leakage on the high pressure side and reduce the thrust load. A screw compressor (1) comprises a screw rotor (2, 52) and a plurality of gate rotors (5a, 5b, 5c, 5d) . The screw rotor (2, 52) has helical grooves (11a, 11b) in its outer circumferential surface, and is rotatable. In the gate rotors (5a, 5b, 5c, 5d) , a plurality of teeth (12) that meshes with the grooves (11a, 11b) of the screw rotor (2, 52) is radially disposed. The helical grooves (11a, 11b ) comprise: a first screw groove (11a), which compresses a fluid from one end side of the screw rotor (2, 52) to an other end side of the screw rotor (2, 52); and a second screw groove (11b) , which compresses the fluid from the other end side of the screw rotor (2, 52) to the one end side of the screw rotor (2, 52).
IPC 8 full level
F01C 17/02 (2006.01); F04C 18/16 (2006.01); F04C 18/52 (2006.01); F04C 23/00 (2006.01); F04C 27/00 (2006.01); F04C 29/12 (2006.01)
CPC (source: EP US)
F01C 17/02 (2013.01 - EP US); F04C 18/52 (2013.01 - EP US); F04C 23/001 (2013.01 - EP US); F04C 27/004 (2013.01 - EP US); F04C 18/16 (2013.01 - EP US); F04C 27/007 (2013.01 - EP US); F04C 29/124 (2013.01 - EP US); F04C 2240/52 (2013.01 - EP US); F04C 2240/603 (2013.01 - EP US)
Citation (search report)
- [XDY] JP 2000257578 A 20000919 - MITSUBISHI ELECTRIC CORP
- [X] US 2158933 A 19390516 - GOOD PAUL E
- [Y] US 6398532 B1 20020604 - ZHA SHILIANG [CN], et al
- [Y] JP S60249689 A 19851210 - TOSHIBA KK
- See references of WO 2009081788A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2236831 A1 20101006; EP 2236831 A4 20160323; EP 2236831 B1 20180919; CN 101903659 A 20101201; CN 101903659 B 20121121; JP 2009150314 A 20090709; JP 4623089 B2 20110202; US 2010260639 A1 20101014; US 8992195 B2 20150331; WO 2009081788 A1 20090702
DOCDB simple family (application)
EP 08865105 A 20081216; CN 200880121496 A 20081216; JP 2007329094 A 20071220; JP 2008072808 W 20081216; US 80872308 A 20081216